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The optimum synthetic conditions of hexadecanoic acid diethanolamide used two-step method are as follows:(1)reaction temperature was 140℃, reaction time was 4.5hours and molar ratio of hexadecanoic acid to diethanolamide was 1:1.15.(2)reaction temperature was 80℃, molar ratio of hexadecanoic acid to diethanolamide was 1:1.55 and mass concentration of the catalyst was 0.8%, reaction time was 3 hours.

二步法合成十六酸二乙醇酰胺最佳合成工艺为：(1)反应温度140℃、反应摩尔比n十六酸∶n二乙醇胺=1∶1.15、反应时间4.5h；(2)反应温度80℃、反应总摩尔比n十六酸∶n二乙醇胺=1∶1.55、催化剂用量0.8%、反应时间3h。

It is a organic hexahydric weak acid. In different acidity, the dissociation degree and the color of reagent solvent were different also. Determined and draw the absorption curve of reagent in varies acidity, and figured out the dissociation constant by Perisic-Janjic method; the complex ratio of the reagent and bismuth was determinated by mole ratio method and continuous variation method; The apparent stability constant of the complex was calculated, the mechanism of dissociation and coordination were discussed.

2，6—二溴4—硝基偶氮氟胂是本实验室合成的测定铋的一个较好的试剂，对其进行了进一步的研究，在用柱层析法对其进行了提纯后，测定了试剂在不同酸华东师范大学硕：l：学位论文摘要度下的吸光度和最大吸收波长，绘制了其吸收曲线，用Perisic一Janjic法计算了试剂的六级离解常数；用摩尔比法和连续变化法测定了试剂与秘形成的配合物的络合比：计算了配合物的表观稳定常数，研究了其离解和配合机理，为筛选高效有机显色剂提供了理论依据。

The kinetic behaviors of ethylene homo- olymerization and ethylene / l-hexene co-polymerization , catalyzed by the metallocene catalyst PS-DVB-MC in an 0.5 L stainless steel reactor , were studied. The effects of polymerization conditions on ethylene polymerization , such as concentration of catalyst , temperature of polymerization , pressure of ethylene , molar ratio of AI / Z r , etc ., were also investigated . Some leading results were as follows : the activity of the catalyst PS–DVB- MC for ethylene homo-polymerization was high ( 1.053 x 107 gPE / mol Zr·h ), but the molar ratio of AI / Zr was low ( 350:1 ); the catalytic ability for ethyleneα-olefin ( such as l hexene etc .) co-olymerization was great , and the corresponding activity come up to a maximum of 1.753 x 107 gPE / mol Zr·h while concenlration of l-hexene was 0.080 mol / L ; the molecular weight of polyethylene was about 180,000 , meanwhile the molecular weight distribution was narrow ( 2.19 ); the bulk density of polyethylene and ethylene / l-hexene co -polymer were 0.25 and 0.34 respectively .

采用0.5L高压不锈钢反应釜，对催化剂PS–DVB-MC催化乙烯均聚和乙烯/ l-己烯共聚合的动力学行为进行了研究，详细考察了催化剂浓度、反应温度、压力、Al/ Zr比、1-己烯浓度等因素对乙烯聚合反应的影响，得到如下主要结论：催化剂PS-DVB-MC具有催化乙烯均聚的高活性(1.053×107g PE / mo1 zr.hr)，低Al / Zr比( 350：1 )；具有良好的催化乙烯与α-烯烃(如1-己烯等)共聚的能力，在1-己烯浓度为0.080 mol / L时，催化活性达到最大(1.783×107 g PE / molZr.hr)；乙烯均聚产物的分子量在18万左右，分子量分布窄( 2.19 )。

According to the test results, the limit values of axial pressure ratio and their correspondent hooped ratio of steel reinforcement high-strength concrete short columns are put forward, which satisfy certain requirement of ductility.

同时指出了现行钢骨混凝土规范《钢骨混凝土结构设计规程》YB9082-97中的抗剪强度计算公式是基于普通混凝土结构的，用于钢骨高强混凝土柱的抗剪强度计算是不合适的，计算结果偏于不安全。

In this program, the declining segment of the stress-strain relation of the concrete, the restriction effect of hooped reinforcement and the bond-slip problem of the reinforcement are considered, as the same time the optimized arithmetic is applied to accelerate calculation procedure. Though the appropriate experiment arrangement, the influential factor such as the strength of concrete, the ratio of hooped reinforcement, the ratio of axial compression and the loading angle are researched, some available rules of carrying ability and ductility of the special-shaped column can be attained.

程序中考虑了混凝土应力应变曲线的下降段及箍筋对混凝土的约束影响，采用了合适的算法加速计算过程并考虑了纵筋锚固滑移的影响，通过正交试验分析了混凝土强度、体积配箍率、轴压比和荷载角对异形柱截面抗弯承载能力及截面曲率延性比的影响。

The optimum reaction conditions were that the molar ratio of maleic anhydride and p-nitroaniline was 1.2:1, the volume ratio of toluene and DMF was 10:1, the amination temperature was 20~30℃ the cyclization temperature was 145~150℃ and the cyclization time was 6 h over; the amount of p-toluene sulfonic acid was 12% of total reactant mass, the amount of copper sulfate was 0.1~0.5% of total reactant mass, the amount of hydroquinol was 0.1% of total reactant mass.

得到的最佳工艺条件是：n：n为1.2：1，V：V为10：1；胺化反应温度为20~30℃，环化反应温度为140~150℃，环化反应时间为6h以上；对甲基苯磺酸用量为反应物总质量的1%~2%；硫酸铜用量为反应物总质量的0.1%~0.5%；对苯二酚用量为反应物总质量的0.1%。

If the ratio or the concentration of 2, 4-D was higher, the callus formed quickly, but it was hygrophanous, and easy to necrosis, conversely, if the ratio or the concentration of 2, 4-D was lower, the callus appeared very slowly or could not form, and adventitious root formed directly or indirectly.

比值较高（或2，4-D浓度较高）时愈伤组织出现的时间较早，但愈伤色泽不好，呈半透明水渍状，易于褐化死亡，而比值较低时，愈伤出现得很慢或不形成愈伤，且易于直接或再分化形成不定根；这些不定根长至1.5-2.0cm时就不生长，并逐渐褐化。

BACKGROUND: We evaluated the usefulness of the hyomental distance ratio, defined as the ratio of the HMD at the extremeof head extension to that in the neutral position, in predictingdifficult visualization of the larynx in apparently normalpatients, by examining the following preoperative airway predictors,alone and in combination: the modified Mallampati test, HMDin the neutral position, HMD and thyromental distance at theextreme of head extension and HMDR.

背景：我们通过以下单一或混合的术前气道指标评估了颏舌距离比在预测表面上正常的患者喉镜检查时发生困难视野的可靠性：改良Mallampati 试验、头部中立位时的HMD、头部最大伸展位时HMD和甲颏距离以及HMDR.HMDR定义在为头部最大伸展位和中立位时HMD的比值。

To evaluate the vascular response in relation to baseline, adjusting for systemic effects and skewed data, we expressed the hyperemic response as the natural logarithm of the ratio of postdeflation to baseline pulse amplitude in the hyperemic finger divided by the same ratio in the contralateral finger that served as control.

为了评价血管反应性与基线血管反应的关系，校正全身性作用及偏离的数据，我们计算袖套排气后充血手指脉搏幅度与基线脉搏幅度的比率以及对侧作对照手指的脉搏幅度与基线脉搏幅度的比率，两比率之比取自然对数表示充血反应。

We find that the youth dependency ratio has a weak and small significant impact on the household consumption, which is differenct from Life-Cycle Hyperthesis and existing literature's findings; while the old dependency ratio does not have a significant impact on household consumption.

我们发现，与生命周期假说的预言和现有文献结论不同，中国儿童抚养系数对居民消费具有负的影响，并且这种影响在数量上并不大；中国老年抚养系数变化对居民消费的影响并不显著。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。